Five different carbon sources (glucose, maltose, sucrose,
lactose, and fructose) were used to investigate their effect
on the production of mycelial biomass and exopolysaccharide secretion. As shown in Table 1, the highest
concentration of exopolysaccharides was obtained when
maltose was used as a carbon source during cultivation of
G. applanatum. It was observed during cultivation of G.applanatum that an increasing concentration of maltose
used as a carbon source was correlated with the amount of
fungal biomass (Fig. 5a). The best results for exopolysaccharides production (9.18 g/L) were obtained when the
concentration of maltose was 30 g/L. In the case of T.
palustris, the best carbon source was fructose. With an
increasing concentration of this sugar, the mycelial biomass concentration increased to 3.36 g/L. A high yield of
exopolysaccharide production (6.8 g/L) was observed
during fungal growth in a medium containing 30 g/L
fructose as the main carbon source (Fig. 5b).